Would a Syringe in Space Create a Void Without Resistance?

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In outer space, pulling back on a syringe plunger without a needle would create a void inside the syringe, but the absence of atmospheric pressure means there would be no external resistance acting on the plunger. On Earth, resistance is felt due to atmospheric pressure pushing against the plunger when a void is created. A free body diagram would illustrate that, while atmospheric pressure exerts a force on the plunger on Earth, no such force exists in the vacuum of space. Therefore, the resistance experienced on Earth is absent in space, highlighting the differences in fluid dynamics between the two environments. The discussion emphasizes the role of atmospheric pressure in creating resistance in a syringe.
pr0230
First Question on this forum, here goes...

IF you have a large syringe(no needle), and put your finger over the tip of the syringe, then pull back on the plunger, you will feel a resistance on the plunger due to the VIOD your are trying to create. In essence there is NOTHING in the void...
SO, If you do the same thing, BUT are in outer space, would you feel the same resistance?
While in outer space you left your finger OFF of the tip of the syringe and pulled back, would there be resistance, since essentially in either case there would be a VIOD in the syringe?
 
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Draw a free body diagram on the plunger for the two situations, and, for the Earth bound syringe, don't forget to include the force of atmospheric pressure on the plunger.

Chet
 

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